title: Two new triterpenoid saponins from the leaves of Aralia elata.
abstract: Phytochemical investigation of the leaves of Aralia elata has led to the isolation of two new compounds 3-O-β-D-glucopyranosyl-(1 → 3)-β-D-glucopyranosyl-(1 → 3)-β-D-glucopyranosyl echinocystic acid (1) and 3-O-β-D-glucopyranosyl-(1 → 3)-β-D-glucopyranosyl-(1 → 3)-β-D-glucopyranosyl oleanolic acid 28-O-β-D-glucopyranoside (2), together with four known compounds 3-6, which were isolated for the first time from this genus. Structural determination was accomplished by spectroscopic analysis, particularly by ¹³C NMR, 2D NMR, and HR-ESI-MS techniques.
authors.affiliation: a School of Chinese Materia Medica, Beijing University of Chinese Medicine , Beijing , 100029 , China.
authors.forename: Zhi-Qiang
authors.initials: ZQ
authors.lastname: Ma
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Cheng-Ke
authors.initials: CK
authors.lastname: Cai
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.forename: Jian
authors.initials: J
authors.lastname: Ni
mesh_terms: D027983:Aralia / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification*; D004578:Electron Spin Resonance Spectroscopy; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018515:Plant Leaves / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C584337:3-O-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranosyl echinocystic acid; C584338:3-O-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranosyl oleanolic acid 28-O-beta-D-glucopyranoside; D004365:Drugs, Chinese Herbal; D012503:Saponins; D014315:Triterpenes